Steam-boiler



(No Model.) V 2 Sheets-Sheet 1'.

G. 1?. WILSON.

- STEAM BOILER. No. 408,280. Patented Aug. 6, 1889.

(No Model.) 2 Sheets-Sheet 2. G. P. WILSON.

STEAM BOILER No. 408,280. Patented Aug. 6, }889.

N. PETERS. Phclwlilhuumpher. Washmglun. DJ E.

lliviTEn STATES PATENT tlrricE.

GEORGE P. IVILSON, OF MONROE, IVISOONSIN.

STEAM BOILER.

SPECIFICATION forming part of Letters Patent No. 408,280, dated August 6, 1889. Application filed April 17, 1889. Serial No. 307,632. (No model.)

To all whom it may concern: Be it known that I, GEORGE P. l/VILSON, residing at Monroe, in the countyof Green and State of \Viscon sin, and a citizen of the United States, have invented a new and useful Improvement in Steam-Boilers, of which the fol lowing is a specification, reference being had to the accompanying drawings, in which Figure 1 is a vertical section. Fig. 2 is a detail, being a side view of one of the watertube sections. Fig. 3 is a top view of one of the water-tube sections. Fig. 4c is a plan of that part of the boiler which remains after the upper part has been removed, the dividing line being at t of Fig. 1. Fig. 5 is an under side View of the upper portion of the boiler, the dividing-line being at 40f Fig. 1. Fig. 6 is a horizontal section at line 6 of Fig. 1. Fig.- 7 is a detail, being a plan, showing, other things, the cover of one of the handholes in the upper part of the boiler. Fig. 8 is an enlarged detail showing an opening to give access to the fuel-chamber.

Myinvention relates to upright boilers. Its leading objects are to provide increased heating-surface without increasing the size of the boiler and without materially adding to the expense thereof, and to improve the construction of the boiler, all of which I accomplish as illustrated in the drawings and hereinafter described.

That which I claim as new will be pointed out in the claims.

The completed boiler may be said to consist of four principal partsa base A, a main portion B, which is supported by the base, a third part 0, which is secured to the upper part of the portion B, and a cap D.

The main portion B consists of a number of sections E. Each section is composed of three water-tubes a Z; c, which are of different lengths and are closed at the bottom. The tube a is open at the top. These openings are marked (Z in Fig. at. The tubes 19 0 communicate with each other and with the tube a, as shown at e in Fig. 1.. There is a small space between the tubes at Z) and between the tubes Z) 0. Each of these sections E is provided with an outside piece f, which extends the whole length of the tube a. The lower among end of the tube a is also provided with an inside piece g, (shown in Figs. 2, 3, and 6,) which pieces f and g are cast with the tube a. The edges of the parts fof the adjoining sections E come together and form an outer wall. The edges of the parts 9 also come together and form the wall of the fire-chamber. The inner end of each section E is also provided with a piece h, the edges of which pieces come together and form the wall of the fuelmagazine G. (Shown in Figs. 1, 2, 3, 4t, and 6.) Between the sections E there are spaces '7 for heat and smoke. The part-s f g 7L are cast with each section E. The tubes (0 are, as shown, oval, the tubes 1) are, as shown, round, and the tubes 0 are horseshoe in shape, as shown in Fig. 6; but I do not limit myself to these special forms, although they are well adapted to secure the greatest amount. of heating-surface.

j are fines for smoke, which flues are connected at their lower and upper ends with the upper and lower portions of the part0 of the boiler. This part 0 forms a water and steam chamber.

Between the chamber O and each section E there is water communication through the openings (Z at the upper ends of the tubes a. Between the remaining portions of tl1e.sections E and the part 0 there is a s1noke-passage 7a, with which the lower ends of the tines j communicate.

In the top of the part 0 there are three hand-holes l, one of which is shown in Fig. 1. These holes are oblong and each is closed, as shown in Figs. 1 and 7.

The cap D covers the upper portion of the part 0; but there is a large passage H th rough this cap and through the central portion of the part G, into which fuel can be introduced when the cover at has been removed, which passage is a part of the fuel-magazine. The part 0 and the several sections E are secured to gether by means of bolts 12, which are inserted from below, one of which passes through each tube a. The rods are securely held by means of bridges o and nuts. Access is had to the interior of the part 0 through the hand-holes for the purpose of holding the nuts while the bolts are turned by a wrench from below.

Ioo

After this part 0 and the sections E have been secured together by the bolts 71 they can be mounted 011 the base A.

I is a casing or shell of sheet metal, which surrounds the part B of the boiler. An opening 13 is provided for the purpose of giving access to the fire-chamber, which opening can be closed by a door 1. This opening is not shown in Fig. 1, because the section is taken directly through the center of the water-tube sections.

In use water can be admitted to the chamber Within the part 0 through a pipe 0", or in any other suitable manner, and water will pass from such chamber into all the tubes at b c. The chamber 0 is to be only partly filled with water, leaving a space for steam above the waterline, and steam can be taken out from this chamber at any desired point, the steamoutlet not being shown in the drawings.

8 is a smoke-pipe.

In use the heat and smoke pass up through the passages between and partly around the water-tubes into the smoke-passage 7t, thence through the fines j into the chamber within the cap D and out through the pipe 8.

WVhat I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a steam-boiler, a series of water-tube sections, each consisting of three tubes at b c, communicating with each other, each tube a being provided with the parts f and g, the

parts f forming an outer wall and the parts g forming the wall of the fire-chamber, substantially as and for the purposes specified.

2. In a steam-boiler, a series of water-tube sections, each consisting of three tubes communicating with each other, and each section being provided with the parts f g h, substantially as and for the purposes specified.

3. In a steam-boiler, a series of water-tube sections E, in combination with a water-chamber 0 above, and combined with the tube-sections E, a smoke-passage 76 between the sections E and water-chamber O, a smoke-chainber above the waterchamber, and flues 7, communicating at their lower ends with the smoke-passage 7c and at their upper ends with the smoke-chamber above the water-chamber O, substantially as and for the purposes specified.

4. In a steam-boiler, a series of water-tube sections E, each provided with an inside piece h, which parts it form the wall of the lower part of the fuel-magazine, in combination with a fire-chamber F, waterchamber 0, smoke-passage 7a, a smoke-chamber above the water-chamber O, fiuesj, which pass through the smoke-chamber (l, and a fuel-magazine G H, substantially as and for the purposes specified.

GEORGE P. VILSON.

Witnesses:

' J. BOLENDER,

E. O. COPELAND. 

